# SDR ALGA084139

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2003
- Submitted: February 21, 2003
- Operation: Air carrier
- Aircraft: N58236
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53069
- Aircraft time: 6,379 hours
- System (JASC): [6240 · Main Rotor Indicating System](https://openairdocs.org/jasc/6240)
- Part: Indicator
- Part number: 407375008101
- Part serial: 0064
- Condition: Defective
- Location: Dual Tach
- Part time: 3 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ALGA084139

## Discrepancy

NR AND NP ERRATIC. THE NR NEEDLE GOES TO ZERO ON GROUND RUN. REPLACED DUAL TACH INDICATOR.

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